作者:Senzhi Zhao、Gopal Sirasani、Shivaiah Vaddypally、Michael J. Zdilla、Rodrigo B. Andrade
DOI:10.1016/j.tet.2016.07.059
日期:2016.10
aza-Baylis–Hillman reaction to construct the ABCE tetracyclic core of the Strychnos alkaloids and applied this method to the total synthesis of (−)-melotenine A (1), a novel rearranged Aspidosperma alkaloid with potent cytotoxic activity. Additional key steps in the synthesis included (1) a Piers annulation of a vinyl iodide and a methyl ketone to prepare the D ring and (2) a site-selective intermolecular
我们已经开发出一种连续的一锅煮的Mitsunobu /分子内氮杂的Baylis-Hillman反应,构建的ABCE四环核心马钱子碱和应用这个方法的全合成( - ) - melotenine A(1),一种新型重排的白坚木属生物碱具有强的细胞毒活性。合成过程中的其他关键步骤包括(1)碘化乙烯和甲基酮的Piers环合以制备D环,以及(2)选择性位点间的分子内乙烯醇醛缩醛反应,以使E环官能化。